Temporal and Spatial Characteristics of Rainfall Erosivity in Southeast Fujian Province During 1980-2009
[Objective] Studying the distribution pattern of rainfall erosivity in the southeastern area of Fujian Province to privide basis for soil erosion control and soil and water conservation plan.[Methods] Based on the data from 26 rainfall station in the Southeastern Fujian Province during 1980-2009,simple algorithm for rainfall erosivity was used.[Results] Rainfall erosivity in Southeastern Fujian Province showed a bimodal distribution as it occoured mainly from May to August.Rainfall erosivity varied greatly over years.The highest value was 725.39 (MJ · mm) / (hm2 · h) occurred in 2006,while the lowest value was 253.82 (MJ · mm) / (hm2 · h) occurred in 1982,with the extreme ratio of 2.86.Rainfall erosivity in Southeast Fujian Province during the past 30 years did not showed abrupt changes.[Conclusion] Rainfall erosivity showed an uneven distribution pattern with increasing trend from coast to inland,and the value was comparatively higher in southwest than that in northeast.
国家科技期刊平台
NSTL
万方数据
维普
